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(No ModeL) F. A. DAVIS.

AUTOMATIO VALVE FOR WASTE PIPES.

" WITNESSES: INVENTOR:

UNITED STATES PATENT OFFICE.

FRANCIS A. DAVIS, OF NEW YORK, N. Y.

AUTOMATIC VALVE FOR WAST E-PIPE S.

SPECIFICATION forming part of Letters Patent No. 264,250, dated September 12, 1882.

Application filed January 5, 1882. (No model.)

To all whom it may concern:

Be it known that I, FRANCIS A. DAVIS, of the city, county, and Stateof NewYork, have invented a new and Improved Automatic Valve for WVaste-Pipes, of which the following is a full, clear, and exact description.

The object of my invention is to provide automatic means for opening and closing wastepipes in such a manner that allescape of sewergas is prevented by positivel y-actin g mechanical devices, the invention being more especially applicable to all kinds of waste-pipes leading from dwelling-houses.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 isa side elevation, partly in section, of a sink having my improved automatic valve applied thereto. Fig. 2 is a partial front elevation of the same, and Fig. 3 is a plan view of the sink and stop-cooks.

A represents the sink. B B represent the stop-cocks attached to the water-supply pipes, and (3 represents the waste-pipe leading from the bottom of the sink to the sewer. In the waste-pipe, between the bottom of the sink and the floor, is placed the stop-cock D, the passage through the spindle of which is arranged in such manner relative to its handle d that the waste-pipe will be closed by the spindle when the handle stands at right angles to the pipe, and opened when the handle stands parallel, or nearly so, with the wastepipe.

To the handle 61 is attached the small chain F, which passes over the small pulley y, secured to the under side of the bottom of the sink, and under the pulley h, also secured to the under side of the bottom of the sink, and is attached to the lower end of the rod a, which isplaced in the passage 0 made through the back board, A, of the sink, as shown in Fig.1.

To the upper end of the rod a is attached the chain G, which passes over the pulley k,

secured immediately above the rod, and around the pulley k, and is attached to the handle 11 of the cock B, and to the chain G is attached the chain H, which passes around the pulley l, and is attached to the handle I) of the cock B, as clearlyshown in Fig. 8. The passages through the spindles of the cooks B B are so formed that the supply-pipes will be opened when the handles 1) I) of the spindles are turned parallel with the pipes and closed when the handles stand at right angles to the sup ply-pipes.

The handle d of the cock D is provided with the chain, cord, or wire E, and to this wire, chain, or cord is attached the weight L, which serves to keep the cock D closed, except when opened by drawing upon the chain F. The chain F and the chains G and H are of such length relative to the distance of movement of the ends of the handles 1) I) necessary to open the cooks B B that the chain F will be drawn a sufficient distance for opening the cock D whenever the supply cocks B or B are opened, and when the said cocks are closed the weight L will automatically close the cock D, thus effectually preventing all possibility of sewer-gas passing up through the wastepipe and entering the house or apartment.

To provide for the escape of any water that may remain in the sink after the cock B or B is closed and for the escape of any water which may be poured into the sink, I provide the upper end of the rod (1 with the finger-lift K, by which the rod may be raised for drawing the chain F for opening the cock D independent of the cooks B or B 5 and in order to retain the rod a in an elevated position for holding the cock D open, I hinge or pivot to the upper edge of the sink the catch or plate N, (which is provided with the projection n upon its upper side for operating the plate,) which is adapted to shut under the collar or similar projection 19, secured upon the rod-a,'as shown in Fig. 1.

The overflow-pipe P of the sink leads from near the upper edge of the sink down to and enters the waste-pipe 0 above the cock D, as clearly shown in the drawings. By this arrangement it will be seen that the waste-pipe will (when not purposely held open) be automatically closed by positively-actin g mechanical means, and the construction of the device is simple and inexpensive.

Though I have shown my invention applied to sinks, it will be understood that I do not confine myself to such application alone, as it can be applied to wash-basins, water-closets, bath-tubs, in fact, all kinds of waste-pipes, with equal facility and with like positive results; and, instead of using chains for connecting the cooks to the rod a, wire, cord, or any other suitable connecting means may be used.

Having thus fully described my invention,- I claim as new and desire to secure by Letters Patentl. The combination, with the handle b of the cock B and pulleys lo and k, of the rod a, chain F, and weighted cock D in the wastepipe (J, substantially as described.

2. The rod a,formed with the collarp, and the hinged plate N for holding the valve D open, 15 substantially as and for the purpose set forth.

3. The cock D, provided with the Weight L, in combination with the chain F, rod a,fingerlift K, and the pulleys g and h, substantially as and for the purposes set forth.

FRANCIS A. DAVIS.

. Witnesses:

H. A. WEST, G. SEDGWIGK. 

